Thermostatic valve



March 22,1927. 1,621,660

A J. Fl-:RRls

THERMO STATI C VALVE Filed Sept. 30. 1925 2 Sheets-Sheet 1 1,621,660 March 22 1927' J. l.. FERRIS THERMOSTATI C VALVE Filed Sept. 30. 1925 2 Sheets-Sheet 2 mgmammmw (lum un,

Patented Mar. 22, 1927. l

UNIT iff. S

JESSE L. FERBIS, 0F LA CRDSSE, WISCONSIN.

rnnnmosrnrro vanve.

.application led September 30, 1925. Serial No. 59,615.

This invention relates to valves of the type used to control the owof steam automatically throu h radiators and the like.

The principal? objects of the invention are the provision of a valve of the above type which will be positive in its action. which may be accurately adjusted to regulate the amount of valve littand thereby adapt the valve Afor uses Where a wide variation in temperature may come about.

To this end the invention contemplates the use ot a frame adapted to be secured within the steam chamber ot a radiator or the like, said frame carrying a sliding carriage upon which is mounted a series of spring elements capable of compound vertical movement through a differential of temperature. The lowermost spring carries a valve adapted to seat on an aperture in the frame. The carriage is made adjustable on the trame.

Theinvention further consists in the combination, arrangement and construction of parts herein shown and described.

In the drawings l Figure 1 is la side elevation partly in section, ot one embodiment of my invention.

Fig. 2 is a top plan viewof the device ot Fig. 1.

Fig. 3 is a detail, partly in section along the line 3-3 of Fig. 1.

Fig. 4 is a side eievation of the device, showing `the valve removed from the casing.

Fig. -5 is a, sectional plan along the line 5-5 ot Fig. 4. Y

Fig, 6 is a detail et the carriage element.

Fig. 7 is a detail ot the bracket.

- Fig. 8 is a detail oit the link.

Fig. 9 is a. side elevation, partly in section, ot the valve and valve seat.

Fig. 10 is a plan view of the base part ot the trarne. l

Reterrin :now particularly to the torrn shown in tie drawings, at 1 is indicated a casing or steam chamber' adapted to be connected to the return pipe ot an ordinary radiator in the usuai manner.

Within the chamber l is located the valve, consisting of a two part trarne which includes a base 2 having a screw threaded extension adapted to be threaded to a corresponding hole in the' casing 1. rilhe traine part 2 is provided with upwardly extending arms 3 adapted to receive between their flanged edges 4 the end ot the complementhrowing its free end tary traine 5. Obviously the langes 4 serve to retain the trame parts 2' and 5 in vertical position and in alinement.

A carriage 6 spaced between the vertical portions 7 ot' the frame 5 is provided with -T-shaped ends having tianges 8 adapted to straddle the vertical portions 7 of the upper trame. A set screw 9 threaded through lthe top of the 'traine 5 and secured in the can riage 6 may be used to move the carriage and its assembly up or down, as desirable.

Attached to each side of the center of the carriage 6 is a series et thermostatic spring elements composed preferably ot super-iin? posed layers of brass and steel with the steel on the-outside. Due to the unequal expansion. ot these two alloys under the saine degrec of heat, these thermostatic springs tend to expand and straighten out or contract and curl up, as the case may be. Each ot these series ot valve actuating members may consist of a substantially circular member 10 having one end fixed to the side of the carriage 6, and its other end attached to one end ot a substantially semi-circular second spring 11. The opposite end of spring 11 is attaehed to a third spring 12 and its other end is secured to a bracket 13. The thermostatie springs on each side or" the carriage 6 are identical. The two brackets 13 carry between thorn links 14 secured therein by pins 15. A pin 16 mounted transversely ot the links 14 pivotally carriesthe shank 17 ot a valve element 18 adapted to seat and unseat. upon the seat 19 in the lower trarne 2.

It will be noted that upon steam being admitted to the chamber containing the thermostatic elements, the upper spring 1() will tend to uncurl or er and outward, thus ownward. The second spring 11 tends to uncurl inward and downward and the third spring l2 in the same manner as spring 10. Thus, a lever action is secured by reason of the compound movement ot the springs 10, 11 and 152, which rnoves the valve 18 up or down a considerable distance tor slight variations in temperature. Such a construction makes a decidedly accurate and sensitive valve.

rThe set screw 9 enables the valve 18 to 'he seated or unseated to make a zero or starting point for any desired temperature..

Ubvieusly the lower trarne 2 may be rcplaced by one as at 2 having a diderent Mld siaed aperture fior connection with the casing l by taking out screws 20 from the ends of the vertical portions 7 of the upper vframe.v The interchangeable frame base'lm laction ,of the thermostatic elements, will move the valve over a comparatively great vertical distance on a slight temperature change.

I claim: Y

1. A thermostatie valve comprising a frame adapted to be contained Within a casing, a valve seat. surrounding an aperture in said frame, a carriage vertically movable in said frame, thermostatic'members mountcd on said carriage and a Valve carried by said members and adapted to seat on said valve seat.

2. A thermostatic valve comprising a frame adapted to be contained Within a lcasa valve seat surrounding an aperture mg, 1n said frame, a carriage vertically movable in said frame, thermostatie members mounted on said carriage and a valve carried by sald'members and adapted to seat on said valve seat, and meanson said frame to vertically move said carriage assembly.

3. A thermostatic valve comprising a frame adapted to be contained within a casing, a valve seat surrounding an aperture in said frame, a carriage vertically movn able in said frame, thermostatic ymembers mounted on said carriage and a valve carried by said members and adapted .to seat on said valve seat, said thermostatic members comprising a pair of series of differentially expansible elements, each series being fixed to opposite sides of the carriage and movable vertically down vard.

4. A thermostatic valve con'iprising la frame adapted to be contained Within a casing,A a, valve seat surrounding an aperture in said frame,I a carriage vertically movable in said frame, thermo-static members mounted on said carriage and a valve car.- ried by said. members and adapted to seat on said valve seat, said thermostatic members comprising a series of three expansible elements one above the other, the upper element having one end fixed to said carriage,

the lower element having one of its ends at-L tached to a fixture carrying the valve, the middle element having one of its ends attached to the element above and the other end to the element below it.

In testimony whereof, I aiix my signa` ture.

JESSE L. FERRS. 

